Piratehunter
I'm Awesome
There may be a metal tag riveted to the side of the trans that states the recommended fluid. There are several threads in here on this topic. Be sure you can get the fill plugs out before you pull the drain plugs.
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DO NOT UNDER ANY CIRCUMSTANCE USE DEXRON VI IN YOUR TRANSFER CASE (OR ANYONE ELSE READING)Okay, here is a distillation of the info I collected today on transmission lubricating fluids and quantities.
Sources include information I got from you guys as well as some research I did on the internet.
Note that I listed Dexron IV instead of Dexron III-H as originally spect'd by GM for the transfer case.
This is because Dexron IV replaced Dexron III and according to GM is a totally compatible upgrade.
Dexron IV is thinner but has a much improved shear resistance which makes it a markedly superior
lubricant to the Dexron III-H.
Enjoy
Vehicle: 1993 Chevrolet K1500, engine 5.0 V8
Transfer Case (New Process 241C) – Dexron IV.
2 liters (2.11 qts)
Transmission (Getrag NV 3500) - Synchromesh Manual Transmission Fluid. AC Delco, Pennzoil, Valvoline.
2.5 liters (2.64 qts)
The only manual trans that came in 1500’s and LIGHT DUTY 2500’s was the NV3500
Yes, which if you remember is what i recommended early on in this threadIt looks like GM is recommending P/N 88861800 "Manual Transmission and Transfer Case Fluid" as a one-size-fits-all
solution for my truck. I found it sold locally at a GM dealer for $12 a quart.